Oil burner



April 28, 1925. 1,535,815.

W. T. CUNNINGHAM OIL BURNER Filed Oct. 2. 1924 W0 1 62" T Cunning/2am rammed Apr. 28, 192.5.

WALTER T. CUNNINGHAM, OF WICI-IITA, KANSAS.

OIL BURNER.

Application filed October 2, 1924.. Serial No. 741,176.

To all whom it may concern:

Belt known that I, WALTER T. CUNNING- HAM, a citizen of the United States, res1ding in \Vichita, county of Sedgwick, and

State of Kansas, have invented new and useful Improvements in Oil Burners, reference being had to the accompanying drawings, which form a part of this application.

My invention relates to oil burners. The object of my invention is to provide a burner having a retort chamber, in direct.

contact with the flame of the burner.

Another object of my invention is to pro vide a burner having a retort chamber adapted to receive the fuel oil and gas through the same feed pipe into the chamber.

A still further object of the invention is to provide a burner that will operate with gas or fuel oil. 7

A still further object of the invention is to provide a burner that when both the gas and oil are turned on, the pressure in the retort chamber will automatically close the gas valve, and in the event of the fuel oil being exhausted, automatically the gas will be turned 011 and continue to operate the burner.

Referring to the drawings, Fig. 1 is an elevation of my burner, with parts removed for convenience of illustration.

Fig. 2 is a top view of the mechanism.

Referring to the drawings in detail, 1 is a retort chamber, having an annular generating pan 2, and centrally located beneath said chamber, is a burner 3, said burner com.-

prising a jet 4, and a sleeve 5, the said sleeve being funnelled at its lower end and in the straight portion l liave provided a plurality of apertures 6, to function as air inlets, making better mixture of the vapor, the sa d burner and retort chamber being connected by a pipe 7, having elbows 8, as

convenient means for connecting to the said burner and retort chamber. 9 is a fuel i supply plpe, connecting with the side walls of the retort chamber, and the'said pipe being controlled by a valve 10, for the supply of fuel oil, the said valve being posit oned along the line at a convenient place, outside the furnace in which my burner may be placed. 11 is a feed pipe adapted to introduce gas into the retort chamber for the purpose hereinafter described, the said pipe connecting with the fuel oil pipe on the outside of the retort chamber as at A, and the said p'pe having a valve 12, for

controlling the flow of the gas, and to be placed along the line at the discretion of the operator. 13 IS a check valve, same being placed in the gas line, between valve 12 and the retort chamber, so that back pressure from the retort chamber will close said valve, while the burner is in operation with the fuel oil.

To operate my burner when connected up approximately asshown in the drawings, or

such deviations as may be required for its installation in any standard furnace, I have provided two ways for generating the oil into gas vapor.

I first turn on the oil so the retort chamher is partly filled, then by pouring oil in the generating pan 2, and by lighting it, the flames will heat the walls of the generating chamber, at which time the gas will form and flow freely from the top of the chamber as at B, passing through the pipe 7 and through the burner 3, where it may be lighted, then the generation 1s continued from the heat-of the burner, the Oll being allowed to flow slowly into the chan'iber and to that created by the flames in the generating pan, and under this process, the oil 'bein enerated into as Vt1301'5 will cause a pressure in the retort chamber, which will be greater than the pressure of the flow of the gas through pipe 11 at which instant the valve 13 will be automatically closed, and the gas from the oil will take the place of the natural gas and the burner will continue to operate. It will also be understood that should the pressure decrease, during the burning period of the fuel ol, the valve 13 will release, allowing the natural gas to flow and the burner will continue to operate when the fuel oil is exhausted, or a stoppage takes place in the line thereof. Therefore my burner will be found to be a combined gas or fuel oil lnirner, or either may be used independently of each other.

I do not confine myself to a round burner as shown in F g. 2, as the retort chamber and generating pan may be elongated to accommodate length of the tire pot, and also one or more burners may be employed beneath the said chamber in the event of elongation of the burner as a whole.

Such modifications may be made as l'e within the scope of the appended claim, and

having thus described my invention, what I claim as new, and desire to secure by Letters Patent is:

In an oil burner, a retort chamber having an annular integral pan there-around, an outlet at the top of: said chamber, a burner positioned concentrically beneath said chamber and connected to said outlet, a mixing sleeve surrounding said burner and having, a lrusto conical lower portion and a perforated cylindrical upper portion, a valved oil inlet 20 to said retort, a valved gas inlet connecting with said oil inlet between the valve thereon and the retort, and a check valve on the gas inlet pipe between the valve and the connection to the oil inlet, whereby the gas is cut oil by an excess of pressure in the retort, substantially as shown and :ter the purpose described.

lVALTER T. CUNNINGlPlAll'l. 

